Update ruamel-yaml requirement from <0.17.17,>=0.15 to >=0.15,<0.17.18

Updates the requirements on [ruamel-yaml](https://sourceforge.net/p/ruamel-yaml/code/ci/default/tree) to permit the latest version.

---
updated-dependencies:
- dependency-name: ruamel-yaml
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 requests>=2.4.3
-ruamel.yaml>=0.15,<0.17.17
+ruamel.yaml>=0.15,<0.17.18
 rdflib>=4.2.2,<6.1
 shellescape>=3.4.1,<3.9
 schema-salad>=8.2.20211104054942,<9

setup.py

@@ -108,7 +108,7 @@
         "setuptools",
         "requests >= 2.6.1",  # >= 2.6.1 to workaround
         # https://github.com/ionrock/cachecontrol/issues/137
-        "ruamel.yaml >= 0.15, < 0.17.17",
+        "ruamel.yaml >= 0.15, < 0.17.18",
         "rdflib >= 4.2.2, < 6.1.0",
         "shellescape >= 3.4.1, < 3.9",
         "schema-salad >= 8.2.20211104054942, < 9",